Rigid pipe hoisting tool

Abstract

The utility model provides a rigid pipe hoisting tool. A lifting hook is arranged at the top of a screw rod, a screw hole in threaded fit with the screw rod is formed in a first movable part, the screw rod is sleeved with a rotating bearing, the first end of a first supporting rod of a first supporting part is hinged to an outer ring of the rotating bearing, and a first anti-skid supporting leg is movably arranged at the second end of the first supporting rod; when the rigid pipe hoisting tool needs to be used, the rigid pipe hoisting tool is firstly placed in a pipe, then the rotating shaft is rotated until the first anti-skid supporting legs of the first supporting pieces abut against the inner wall of the pipe, and then a hook of a hoisting cart is connected with a lifting hook; compared with an existing hoisting mode, the rigid pipe hoisting tool has the advantages that the rigid pipe hoisting tool can be taken down by reversely rotating the rotating shaft after the pipe is hoisted to a target position, and the rigid pipe hoisting tool is safe and can prevent the rigid structure of the pipe from being damaged.

Description

Technical Field

[0001] The utility model relates to the field of pipe lifting tools, in particular to a rigid pipe lifting tool. Background Art

[0002] During the installation of sewage discharge pipes in a sewage treatment plant, some pipes need to be installed vertically. To facilitate lifting, slings are usually used to wrap around the pipes for vertical lifting, or lifting lugs are welded inside the pipes first and then removed after the lifting is completed.

[0003] However, when using slings to wrap around the pipes for vertical lifting, they are prone to falling off, which can easily lead to safety accidents; while the method of welding lifting lugs inside the pipes is likely to damage the rigid structure of the pipes. Therefore, there is an urgent need for a safe lifting tool that does not damage the rigid structure of the pipes. Summary of the Utility Model

[0004] In view of this, the embodiments of the present utility model provide a rigid pipe lifting tool to achieve vertical lifting of rigid pipes.

[0005] To achieve the above object, the embodiments of the present utility model provide the following technical solutions:

[0006] A rigid pipe lifting tool, comprising: a screw rod, a hook, a first movable member, a rotating bearing, and a plurality of first support members;

[0007] The hook is arranged at the top of the screw rod;

[0008] The first movable member is provided with a threaded hole that is in threaded cooperation with the screw rod;

[0009] The rotating bearing is sleeved on the screw rod;

[0010] The first support member includes a first support rod, a second support rod, and a first anti-slip support foot;

[0011] The first end of the first support rod is hinged to the outer ring of the rotating bearing;

[0012] The first anti-slip support foot is movably arranged at the second end of the first support rod for contacting the inner wall of the pipe;

[0013] The first end of the second support rod is hinged to the first movable member, and the second end is hinged to the first support rod.

[0014] Preferably, a plurality of first support members are evenly arranged circumferentially around the screw rod.

[0015] Preferably, the second support rod is a telescopic rod with adjustable length.

[0016] Preferably, the first support member further includes: a first fastening bolt for restricting the telescopic movement of the second support rod.

[0017] Preferably, the first movable member is located above the rotating bearing.

[0018] Preferably, it further includes: a second movable member and a plurality of second support members;

[0019] The screw rod includes a first threaded portion and a second threaded portion. Among them, the first threaded portion is located above the second threaded portion. The first threaded portion is in threaded cooperation with the first movable member, and the thread direction of the first threaded portion is opposite to that of the second threaded portion;

[0020] The second movable member is provided with a threaded hole that is in threaded cooperation with the second threaded portion;

[0021] The second support member includes a third support rod, a fourth support rod, and a second anti-slip support foot;

[0022] The first end of the third support rod is hinged to the outer ring of the rotating bearing;

[0023] The second anti-slip support foot is movably arranged at the second end of the third support rod and is used to contact the inner wall of the pipe;

[0024] The first end of the fourth support rod is hinged to the first movable member, and the second end is hinged to the third support rod.

[0025] Preferably, a plurality of second support members are evenly arranged circumferentially around the screw rod.

[0026] Preferably, the fourth support rod is a telescopic rod with adjustable length.

[0027] Preferably, the second support member further includes: a second fastening bolt for restricting the telescopic movement of the fourth support rod.

[0028] Preferably, it further includes: a first limiting member and a second limiting member;

[0029] The first limiting member is arranged at the upper end of the screw rod, and the first limiting member is used to restrict the first movable member from disengaging from the upper end of the screw rod;

[0030] The second limiting member is arranged at the lower end of the screw rod, and the second limiting member is used to restrict the second movable member from disengaging from the lower end of the screw rod.

[0031] Based on the rigid pipe hoisting tool provided by the above-mentioned present utility model, a hook is arranged at the top of the screw rod, a screw hole that is in threaded cooperation with the screw rod is formed in the first movable member, a rotating bearing is sleeved on the screw rod, the first end of the first support rod of the first support member is hinged to the outer ring of the rotating bearing, and the first anti-slip support foot for contacting the inner wall of the pipe is movably arranged at the second end of the first support rod. The first end of the second support rod is hinged to the first movable member, and the second end is hinged to the first support rod. Through the disclosed rigid pipe hoisting tool, when it is needed to be used, the rigid pipe hoisting tool can be first placed inside the pipe, and then the rotating shaft is rotated to make the second end of the first support rod away from the rotating shaft until the first anti-slip support feet of multiple first support members are all in contact with the inner wall of the pipe. Then, the hook of the hoisting vehicle is connected to the hook, and the pipe can be vertically hoisted. After the pipe is hoisted to the target position, by reversely rotating the rotating shaft, the second end of the first support member is made to approach the rotating shaft so that the first anti-slip support foot is separated from the inner wall of the pipe, and the rigid pipe hoisting tool can be removed. Compared with the existing hoisting method, the present application is not only safe but also can avoid the rigid structure of the pipe from being damaged. Brief Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0033] Figure 1 Structural schematic diagram of a rigid pipe hoisting tool provided by an embodiment of the present utility model;

[0034] Figure 2 Structural schematic diagram of the first anti-slip support foot or the second anti-slip support foot provided by an embodiment of the present utility model;

[0035] Figure 3 Cross-sectional structural schematic diagram of the rotating bearing provided by an embodiment of the present utility model;

[0036] Figure 4 Structural schematic diagram of the rigid pipe hoisting tool hoisting a pipe provided by an embodiment of the present utility model.

[0037] Wherein, screw rod 1, first thread portion 11, second thread portion 12, hook 2, first movable member 3, rotating bearing 4, first support rod 51, second support rod 52, first anti-slip support foot 53, first fastening bolt 54, second movable member 6, third support rod 71, fourth support rod 72, second anti-slip support foot 73, second fastening bolt 74, first limiting member 8, second limiting member 9, pipe 10. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] An embodiment of the present utility model provides a rigid pipe hoisting tool. Refer to Figures 1 to 4 , Figure 1 which is a schematic structural diagram of the rigid pipe hoisting tool. The rigid pipe hoisting tool includes: a screw rod 1, a hook 2, a first movable member 3, a rotating bearing 4, and a plurality of first support members;

[0040] The hook 2 is arranged at the top of the screw rod 1;

[0041] The first movable member 3 is provided with a threaded hole that is in threaded cooperation with the screw rod 1;

[0042] The rotating bearing 4 is sleeved on the screw rod 1;

[0043] The first support member includes a first support rod 51, a second support rod 52, and a first anti-slip support foot 53;

[0044] The first end of the first support rod 51 is hinged to the outer ring of the rotating bearing 4;

[0045] The first anti-slip support foot 53 is movably arranged at the second end of the first support rod 51 and is used for contacting the inner wall of the pipe 10;

[0046] The first end of the second support rod 52 is hinged to the first movable member 3, and the second end is hinged to the first support rod 51.

[0047] It should be noted that since the rotating bearing 4 is sleeved on the screw rod 1 and the first movable member 3 is in threaded cooperation with the screw rod 1, by rotating the screw rod 1, the first movable member 3 can be driven to move along the axial direction of the rotating shaft. The first end of the first support rod 51 is hinged to the outer ring of the rotating bearing 4, the first end of the second support rod 52 is hinged to the first movable member 3, and the second end is hinged to the first support rod 51. Therefore, when the first movable member 3 moves along the axial direction of the rotating shaft, the outer diameter of the first support member can be adjusted. Furthermore, through the contact between the first anti-slip support foot 53 and the inner wall of the pipe 10, friction can be provided for hoisting the pipe 10 during the hoisting process of the pipe 10.

[0048] In the embodiment of the present utility model, the hook 2 is arranged at the top of the screw rod 1, a threaded hole that is in threaded cooperation with the screw rod 1 is provided in the first movable member 3, the rotating bearing 4 is sleeved on the screw rod 1, the first end of the first support rod 51 of the first support member is hinged to the outer ring of the rotating bearing 4, the first anti-slip support foot 53 for contacting the inner wall of the pipe 10 is movably arranged at the second end of the first support rod 51, the first end of the second support rod 52 is hinged to the first movable member 3, and the second end is hinged to the first support rod 51. Through the rigid pipe hoisting tool disclosed above, when it is needed to be used, the rigid pipe hoisting tool can be first placed inside the pipe 10, and then the rotating shaft is rotated to make the second end of the first support rod 51 move away from the rotating shaft until the first anti-slip support feet 53 of multiple first support members are all in contact with the inner wall of the pipe 10. Then, the hook of the hoisting vehicle is connected to the hook 2, and the pipe 10 can be vertically hoisted. After the pipe 10 is hoisted to the target position, by rotating the rotating shaft in the reverse direction to make the second end of the first support member approach the rotating shaft, so that the first anti-slip support foot 53 is separated from the inner wall of the pipe 10, the rigid pipe hoisting tool can be removed. Compared with the existing hoisting method, the present application is not only safe but also can avoid the rigid structure of the pipe 10 from being damaged.

[0049] Specifically, a plurality of first support members are circumferentially and uniformly arranged around the screw rod 1.

[0050] It should be noted that circumferentially and uniformly arranging a plurality of first support members around the screw rod 1 can make the first anti-slip support feet 53 of the plurality of first support members receive more uniform forces, further improving the safety of hoisting the pipe 10.

[0051] Furthermore, the second support rod 52 is a telescopic rod with adjustable length.

[0052] It should be noted that setting the length of the second support rod 52 as a telescopic rod with adjustable length can make the adjustment range of the outer dimension of the first support rod 51 larger, and thus can adapt to hoisting pipes 10 with different diameters.

[0053] Furthermore, the first support member further includes: a first fastening bolt 54 for restricting the telescopic movement of the second support rod 52.

[0054] It should be noted that by providing the first fastening bolt 54 for restricting the telescopic movement of the second support rod 52, it can be avoided that the second end of the second support rod 52 approaches the rotating shaft during hoisting, resulting in the separation of the first anti-slip support foot 53 from the pipe 10, ensuring that the first anti-slip support foot 53 can continuously contact the inner wall of the pipe 10, avoiding the pipe 10 from falling off, and further ensuring the safety of hoisting the pipe 10.

[0055] Specifically, the first movable member 3 is located above the rotating bearing 4.

[0056] It should be noted that the first movable member 3 can be arranged above the rotating bearing 4 or below the rotating bearing 4, and those skilled in the art can make a choice according to requirements.

[0057] Furthermore, the rigid pipe hoisting tool further includes: a second movable member 6 and a plurality of second support members;

[0058] The screw rod 1 includes a first threaded portion 11 and a second threaded portion 12. Among them, the first threaded portion 11 is located above the second threaded portion 12. The first threaded portion 11 is in threaded cooperation with the first movable member 3, and the thread direction of the first threaded portion 11 is opposite to that of the second threaded portion 12;

[0059] The second movable member 6 is provided with a threaded hole in threaded cooperation with the second threaded portion 12;

[0060] The second support member includes a third support rod 71, a fourth support rod 72, and a second anti-slip support foot 73;

[0061] The first end of the third support rod 71 is hinged to the outer ring of the rotating bearing 4;

[0062] The second anti-slip support foot 73 is movably arranged at the second end of the third support rod 71 for contacting the inner wall of the pipe 10;

[0063] The first end of the fourth support rod 72 is hinged to the first movable member 3, and the second end is hinged to the third support rod 71.

[0064] It should be noted that by setting the second movable member 6 and a plurality of second support rods 52, the screw rod 1 is provided with a first thread portion 11 and a second thread portion 12, and the first thread portion 11 is located above the second thread portion 12. The first thread portion 11 is in threaded cooperation with the first movable member 3, and the thread direction of the first thread portion 11 is opposite to that of the second thread portion 12. A threaded hole in threaded cooperation with the second thread portion 12 is formed in the second movable member 6. The first end of the third support rod 71 of the second support member is hinged to the outer ring of the rotating bearing 4. The second anti-slip support foot 73 for contacting the inner wall of the pipe 10 is movably arranged at the second end of the third support rod 71. The first end of the fourth support rod 72 is hinged to the first movable member 3, and the second end is hinged to the third support rod 71. Thus, when the rotating shaft is rotated, the second ends of the first support rod 51 and the third support rod 71 can be simultaneously moved away from the rotating shaft until the first anti-slip support feet 53 of the plurality of first support members are all in contact with the inner wall of the pipe 10, and the second anti-slip support feet 73 of the plurality of second support members are all in contact with the inner wall of the pipe 10. Since the first anti-slip support feet 53 and the second anti-slip support feet 73 can be simultaneously in contact with the inner wall of the pipe 10, when the rigid pipe lifting tool is used to lift the pipe 10, the connection between the rigid pipe lifting tool and the pipe 10 can be further improved, and the pipe 10 can be further prevented from falling off during the lifting process, thereby improving the safety of lifting the pipe 10.

[0065] Preferably, the second anti-slip support foot 73 has the same structure as the first anti-slip support foot 53. An anti-slip pad is provided on the side of the first anti-slip support foot 53 in contact with the inner wall of the pipe, and the anti-slip pad is provided with anti-slip lines.

[0066] Preferably, the first movable member 3 and the second movable member 6 have the same structure and size.

[0067] It should be noted that the structure and size of the first movable member 3 and the second movable member 6 can be set to be the same or different. In this application, it is preferably to set the structure and size of the first movable member 3 and the second movable member 6 to be the same.

[0068] Preferably, the first movable member 3 is a disc.

[0069] Specifically, a plurality of second support members are evenly arranged circumferentially around the screw rod 1.

[0070] It should be noted that by evenly arranging a plurality of second support members circumferentially around the screw rod 1, the second anti-slip support feet 73 of the plurality of second support members can be more evenly stressed, further improving the safety of lifting the pipe 10.

[0071] Furthermore, the fourth support rod 72 is a telescopic rod with adjustable length.

[0072] It should be noted that by setting the fourth support rod 72 as a telescopic rod with adjustable length, the adjustable range of the external dimensions of multiple second support rods 52 can be made larger, and thus it can adapt to the hoisting of pipes 10 with different diameters.

[0073] Furthermore, the rigid pipe hoisting tool further includes: a second fastening bolt 74 for restricting the telescoping of the fourth support rod 72.

[0074] It should be noted that by setting the second fastening bolt 74 for restricting the telescoping of the fourth support rod 72, it can be avoided that the second end of the third support rod 71 approaches the rotating shaft during the hoisting process, resulting in the separation of the second anti-slip support foot 73 from the pipe 10, ensuring that the second anti-slip support foot 73 can continuously abut against the inner wall of the pipe 10, preventing the pipe 10 from falling off, and further ensuring the safety of the hoisting of the pipe 10.

[0075] Furthermore, the second support member further includes: a first limiting member 8 and a second limiting member 9;

[0076] The first limiting member 8 is arranged at the upper end of the screw rod 1, and the first limiting member 8 is used to restrict the first movable member 3 from disengaging from the upper end of the screw rod 1;

[0077] The second limiting member 9 is arranged at the lower end of the screw rod 1, and the second limiting member 9 is used to restrict the second movable member 6 from disengaging from the lower end of the screw rod 1.

[0078] It should be noted that by arranging the first limiting member 8 at the upper end of the screw rod 1 and the second limiting member 9 at the lower end of the screw rod 1, it can be avoided that when the user rotates the rotating shaft excessively, the first movable member 3 disengages from the upper end of the screw rod 1 and the second movable member 6 disengages from the lower end of the screw rod 1.

[0079] Preferably, the first limiting member 8 is a nut.

[0080] Preferably, the second limiting member 9 is a plug.

[0081] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rigid pipe lifting tool, characterized in that: include: A screw rod, a hook, a first movable member, a rotating bearing and a plurality of first supporting members; The hook is arranged on the top of the screw rod; The first movable member is provided with a screw hole matched with the screw thread; The rotating bearing is sleeved on the screw; The first support member includes a first support rod, a second support rod and a first anti-slip support foot; The first end of the first support rod is hinged to the outer ring of the rotating bearing; The first anti-slip support foot is movably disposed at the second end of the first support rod, and is used to contact the inner wall of the pipe; The first end of the second support rod is hinged to the first movable member, and the second end of the second support rod is hinged to the first support rod.

2. The rigid pipe lifting tool according to claim 1, characterized in that: A plurality of first supporting members are evenly arranged around the circumference of the screw rod.

3. The rigid pipe lifting tool according to claim 1, characterized in that: The second support rod is a telescopic rod with adjustable length.

4. The rigid pipe lifting tool according to claim 3, characterized in that: The first support member further includes: a first fastening bolt for limiting the extension and retraction of the second support rod.

5. The rigid pipe lifting tool according to claim 1, characterized in that: The first movable member is located above the rotating bearing.

6. The rigid pipe lifting tool according to claim 5, characterized in that: Also includes: a second movable member and a plurality of second supporting members; The screw comprises a first threaded portion and a second threaded portion, wherein the first threaded portion is located above the second threaded portion, the first threaded portion is threadedly matched with the first movable member, and the thread direction of the first threaded portion is opposite to the thread direction of the second threaded portion; The second movable member is provided with a screw hole which is threadably matched with the second threaded portion; The second support member includes a third support rod, a fourth support rod and a second anti-slip support foot; The first end of the third support rod is hinged to the outer ring of the rotating bearing; The second anti-slip support foot is movably disposed at the second end of the third support rod, and is used to contact the inner wall of the pipe; The first end of the fourth support rod is hinged to the first movable member, and the second end of the fourth support rod is hinged to the third support rod.

7. The rigid pipe lifting tool according to claim 6, characterized in that: A plurality of the second supporting members are evenly arranged around the circumference of the screw.

8. The rigid pipe lifting tool according to claim 6, characterized in that: The fourth support rod is a telescopic rod with adjustable length.

9. The rigid pipe lifting tool according to claim 8, characterized in that: The second support member also includes: a second fastening bolt for limiting the extension and retraction of the fourth support rod.

10. The rigid pipe lifting tool according to any one of claims 6 to 9, characterized in that: Also includes: a first stopper and a second stopper; The first limiting member is disposed at the upper end of the screw rod, and the first limiting member is used to limit the first movable member from coming out of the upper end of the screw rod; The second limiting member is disposed at the lower end of the screw rod, and the second limiting member is used to limit the second movable member from escaping from the lower end of the screw rod.

Images